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One Mars Probe Photographs Another

sighted writes "In one of the more remarkable shots ever taken by robotic space explorers, the Opportunity Mars rover has been photographed by the Mars Reconnaissance Orbiter ." From the article: "Shown in the image are 'Duck Bay,' the eroded segment of the crater rim where Opportunity first arrived at the crater; 'Cabo Frio,' a sharp promontory to the south of Duck Bay; and 'Cape Verde,' another promontory to the north. When viewed at the highest resolution, this image shows the rover itself, wheel tracks in the soil behind it, and the rover's shadow, including the shadow of the camera mast. After this image was taken, Opportunity moved to the very tip of Cape Verde to perform more imaging of the interior of the crater."

32 of 146 comments (clear)

  1. Happens Once in a Red Mars by eldavojohn · · Score: 5, Funny

    Yeah, I know how the probes feel, every now and then I'll run into one of my grade school classmates thousands of miles away from where we went to school.

    We shake hands and take pictures of each other.

    I wonder if the probes experience the same awkward silence after you've asked them how they're doing and feign interest about what they've been up to. I'll bet they both broke out, "Well, I'll let you go, you must be so busy and what with having the whole rest of the planet to photograph....but it was nice meeting you! And out here of all places! I mean with you an orbiter and I a rover, who would have thought we would have been assigned to the same planet?! It's a small universe afterall!"

    --
    My work here is dung.
  2. Moo by Chacham · · Score: 3, Funny

    Opportunity Mars rover: I can't believe it, it's like a dream. What's wrong?
    Mars Reconnaissance Orbiter: I just had a terrible thought: what if this is a dream?
    Opportunity Mars rover: Well then photograph me quick before you wake up.

  3. Impressive resolution by BWJones · · Score: 2, Insightful

    Wow, impressive resolution for such a remote platform. Of course the resolution of the current US spy satellites is about three times better (10cm optimal), but those things are the size of a school bus and regardless, it is impressive what you can see with 30cm resolution.

    Does anybody know if the Mars Reconnaissance orbiter is limited to the visible spectrum, or does it have multispectral capabilities?

    P.S. I am sure the Google folks will want these data to update Google Mars. :-)

    --
    Visit Jonesblog and say hello.
    1. Re:Impressive resolution by symie5 · · Score: 3, Informative
      Wow, impressive resolution for such a remote platform. Of course the resolution of the current US spy satellites is about three times better (10cm optimal), but those things are the size of a school bus and regardless, it is impressive what you can see with 30cm resolution.


      I'm willing to bet US spy (esp. military) satellites can have much better resolution than 10cm...I work for a GIS company, and we often work with satellite imagery at 5cm resolution. I believe, by the way, the MRO does have multispectral capabilities (seven-channel, from ultraviolet to near-infrared).
    2. Re:Impressive resolution by mopomi · · Score: 2, Interesting

      Try 544 channels at ~18 m/pixel.

      http://crism.jhuapl.edu/instrument/innoDesign.php

    3. Re:Impressive resolution by hubie · · Score: 3, Insightful
      The pictures are amazing, but not within the context of spy satellites. The MRO orbit is only 250 to 300 km above the surface, which isn't even considered a LEO orbit on Earth.

      Let's see, 30 cm resolution at 300 km works out to be a microradian angular resolution. Hubble has a resolution of 0.1 arcsec, which is like 0.5 microradians, so I suppose if you put Hubble at MRO's orbit then it would see about a factor of two better, whereas a naively one might assume a factor of 4.8 times better given that the aperture sizes on Hubble and HIRISE are 2.4 and 0.5 meters respectively. That is probably a bit of apples to oranges because I don't know in what context the Hubble resolution is. The HIRISE says it is 30 cm per pixel at 300 km, but the Hubble number I found just states it as the basic telescope resolution without mentioning whether they are talking about an Airy disk size, Rayleigh criterion, or whatever. For what it is worth, both the basic Hubble (without instruments) and HIRISE both run at f/24, so their blur spots would be comparable, so if you put the same detector behind them, they would have the same resolution.

    4. Re:Impressive resolution by JungleBoy · · Score: 2, Insightful

      About 5 years ago I attended a technical workshop at JPL in Pasadena, CA. One of the presentations I went to was on new features added to the GeoTIFF image format. It was given by a contract software engineer for the DoD. The part the made me raise an eyebrow was when he was discussing being able to create multi-petabyte geotiff images through virtuallization/referencing in the format. He made the off hand comment that the entire planet at 1cm resolution is about 1PB, and his geotiff extensions could handle it.

      --
      "You never know when some crazed rodent with cold feet might be running loose in your pants."
      -Calvin
    5. Re:Impressive resolution by symie5 · · Score: 2, Insightful

      I'm not "leaking" anything sensitive, so no worries about my job. :-)

      However, all the heckling was bothering the hell out of me so I had to go back and double-check my sources, and I apologize; I believe I stand mistaken...the first 2-inch res imagery to which I referred was indeed aerial photography (frown), and a secondary image to which I referred as being awestruck by was a 10cm res image (according to a colleague)...my sincere apologies to BWJones. I am humbled.
       
      Oh, and thanks, Wavicle, for providing the heckle that made me run and check again. (yet another frown)

    6. Re:Impressive resolution by mopomi · · Score: 2, Informative

      Ah. No, I'm thinking of CRISM, the spectrometer, also on MRO.

      MARCI is for weather monitoring (it will be very useful for knowing where there are clouds and haze and avoiding targetting HiRISE there).

      There's also CTX, the context imager, clocking in at ~6m/pixel.

      Lots and lots of good data is going to come from this mission.

  4. Full View by dankstick · · Score: 5, Informative
    1. Re:Full View by CopaceticOpus · · Score: 5, Funny
  5. Depression by joerdie · · Score: 5, Insightful

    This makes me sad. We now have so much equipment over there doing all this great stuff and no people. I wish there could be another space race. (without the threat of nukes.)

    1. Re:Depression by Rei · · Score: 4, Insightful

      This makes me happy. We're not wasting many billions of dollars on another "Gee, whiz, we went there!" action before we have brought launch costs down enough to make a Mars base sustainable in the long-run. Instead, we're using extremely effective robotic probes for the tiniest fraction of the cost as a stopgap.

      --
      Pinkypants -- my favorite!
    2. Re:Depression by caseih · · Score: 3, Interesting

      Wasting billions of dollars? You have a strange idea of where money goes. Those billions of dollars that if spent on a space race would ultimately increase the size of our economy (national and global) by up to three fold (if I remember my Econ 101 class correctly). That amplifies the affect of the money and really allows that money to now benefit many more people, that it would if we spent it directly on, say, some kind of welfare assistance. Of course it's the disparity that we should worry about. But still. It's not like our money goes into space with the rockets.

  6. Will this change Opportunity's plans? by RobertB-DC · · Score: 4, Insightful

    Ok, I'll admit, my first thought on seeing the picture was Oh. My. Gawd. That's a picture of something we put on another *planet*, a little red dot in the sky. Then I started rummaging through the stock phrases about the future of Man and stuff like that.

    But one actual question that comes to mind -- now that the Opportunity team has high-resolution pictures of their baby's room, will they change where they send him to play? For example, could they see that rock just south of the dark "Cape Verde" formation? And looking back, if they'd had pictures like these to work with, would they have approached the crater from a different angle?

    --
    Stressed? Me? Of course not. Stress is what a rubber band feels before it breaks, silly.
    1. Re:Will this change Opportunity's plans? by iamlucky13 · · Score: 2, Interesting

      Would they change where they send him to play? Probably not. Current planning has been conducted based on images taken my the Mars Odyssey and Mars Global Surveyor probes. The best images of the area from those probes are around 1/4 the resolution (1-2 meters/pixel) if I remember right. Still, they show the major features and led to the decision to try to reach the crater.

      If you look at the path the rover took from Endurance crater to Victoria, it's pretty much a straight line. The goal for the last 6 months was just to get there. The rover has been running for 10 times as long as needed to be considered a successful mission, and almost 3 times as long as even the most optimistic estimates (they had to get a special budget approval for the operations team after the end of the first year...after two planned-for operational budget extensions).

      Even if they had more confidence in the continued longevity of Opportunity, they probably still wouldn't have changed the course much. First, Duck Bay looks like a potentially excellent entrance to the crater, so it's a good place to begin observations. Second, Victoria is half a mile across (1.5 miles around). In a little under 3 years, they've accrued a total of about 5 miles of driving. The further around they start their approach, the longer they have to wait for really detailed pictures that will allow them to pick the true points of interest.

      This picture is way cool. I remember way back when they first landed and the MGS caught a picture of the rovers. It was single-spectrum (B&W), and you could see 3 or 4 darker grey pixels that were labeled as the rover, half a dozen or so pixels labeled as the lander, and a sparse string of very slightly darker pixels that seemed to nearly line up labeled as the rover tracks. In this picture you can actually see what direction it's pointed and just barely make out the white stripe of the camera mast.

  7. Wow! by east+coast · · Score: 5, Funny

    It's fantastic that eggheads can find that teeny tiny rover on all the face of Mars when on most nights I have a hard time finding the ignition in my car after I leave the bar.

    --
    Dedicated Cthulhu Cultist since 4523 BC.
    1. Re:Wow! by dan828 · · Score: 2, Informative

      The already did that a few months ago. http://news.bbc.co.uk/2/hi/science/nature/4542174. stm

  8. Proof! by MindStalker · · Score: 4, Insightful

    Finally Proof of intelligence. On another planet.
    (Robot is proof of intelligence, and its on another planet, the sentences don't necessarily have to be linked.)

    1. Re:Proof! by trongey · · Score: 2, Funny
      Finally Proof of intelligence. On another planet.
      (Robot is proof of intelligence, and its on another planet, the sentences don't necessarily have to be linked.)

      I'll give you partial credit for the "on another planet" part. No points for proof of intelligence, because there's strong evidence that the robot was built by humans.
      --
      You never really know how close to the edge you can go until you fall off.
    2. Re:Proof! by sighted · · Score: 2, Interesting

      That's an interesting observation. I don't know if there was ever life on Mars before, but there is now (at least in proxy). That rover is probably the only thing moving on that plain, perhaps ever. It reminds me of the end of The Martian Chronicles, when the family looks into the canal to see the Martians, and their own reflections look back at them.

      --
      Saddle up: Riding with Robots
  9. Re:Taking pictures of the car... by kfg · · Score: 4, Funny

    Think of the ratings if there were actual people there!

    Is she sunbathing nude?

    KFG

  10. All in a day's work. by Rob+T+Firefly · · Score: 5, Funny

    "Morning, Sam."

    "Morning, Ralph."

  11. Re:Taking pictures of the car... by mcmonkey · · Score: 2, Insightful

    Interesting how the some of the most popular photos from these missions are pictures of other man-made objects.

    Considering how NASA is consistently at the short end of the federal budgeting stick, would the agency do better as a private foundation funded by sending out probes decked out like something out of NASCAR?

  12. More disturbing would have been by WillAffleckUW · · Score: 3, Funny

    if the tracks had spelled out "When Can I Come Home?"

    --
    -- Tigger warning: This post may contain tiggers! --
    1. Re:More disturbing would have been by WillAffleckUW · · Score: 2, Funny

      maybe if it had an Intergalactic Parking Ticket ... now that would have been fun ...

      --
      -- Tigger warning: This post may contain tiggers! --
  13. wow... by Simon+Thulbourn · · Score: 4, Funny

    Wow, I can view Mars in better detail than I can my own freaking house on Google Maps...

  14. The picture is impressive... by Hamster+Lover · · Score: 4, Funny

    but it is more impressive that Opportunity is still working years after its original mission was expected to end. I know both rovers, Opportunity and Spirit, are showing their age, but still to continue to function two and half years past their "warranty" as NASA calls is so cool. In the time since they landed on Mars I've moved three times, changed cities, broke up with two girlfriends, changed jobs and done time for molesting a goat.

  15. Re:Moon Probe by Ars+Dilbert · · Score: 3, Informative

    No, we can't do that. The Apollo artifacts left on the Moon are just too small. Even the mighty Hubble does not have the resolution necessary to resolve Apollo stuff.

    The ESA lunar probe SMART-1 was in lunar orbit for a while, and it too was not able to resolve Apollo landing sites. But SMART-1 did capture lunar terrain in detail never before possible, except for the pictures taken on the surface of the moon by the Apollo astronauts. The terrain matched the Apollo pictures perfectly, so yeah we've been there. Not that *I've* ever had any doubt.

  16. Re:Moon Probe by mh101 · · Score: 2, Insightful

    I don't think even that would convince everyone.

    They'd simply argue that the probe's launch was actually just another routine launch, and with the state of today's CG capabilities, it would be a piece of cake to fake footage.

    The only way to prove it to those people would be to actually send them there in person.

    --
    Duct tape is like the Force. It has a light side, a dark side, and it holds the universe together.
  17. Re: Photographing themselves by Anonymous Coward · · Score: 2, Funny

    An analysis of probe communications reveals that they are now uploading their pictures of each other to their MySpace profiles.
    Look, they even used that cliched "MySpace angle" where you shoot the camera down from above.